hic.c

nucleus plus ARM9 source code

/*************************************************************************/
/*                                                                       */
/*               Copyright Mentor Graphics Corporation 2002              */
/*                         All Rights Reserved.                          */
/*                                                                       */
/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */
/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */
/* SUBJECT TO LICENSE TERMS.                                             */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                               VERSION       */
/*                                                                       */
/*      hic.c                                          Nucleus PLUS 1.14 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      HI - History Management                                          */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the core routines for the History Management  */
/*      component.                                                       */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      HIC_Disable_History_Saving          Disable history saving       */
/*      HIC_Enable_History_Saving           Enable history saving        */
/*      HIC_Make_History_Entry_Service      Make history entry service   */
/*      HIC_Make_History_Entry              Make system history entry    */
/*      HIC_Retrieve_History_Entry          Retrieve history entry       */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      tc_extr.h                           Thread Control functions     */
/*      tm_extr.h                           Timer management functions   */
/*      hi_extr.h                           History functions            */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*      03-01-1994      Replaced void with VOID,                         */
/*                        modified protection logic,                     */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*      04-17-1996      updated to version 1.2                           */
/*      03-24-1998      Released version 1.3.                            */
/*      03-26-1999      Released 1.11m (new release                      */
/*                        numbering scheme)                              */
/*      04-17-2002      Released version 1.13m                           */
/*      11-07-2002      Released version 1.14                            */
/*************************************************************************/
#define         NU_SOURCE_FILE

#include        "in_defs.h"                 /* Initialization defines    */
#include        "tc_extr.h"                 /* Thread control functions  */
#include        "tm_extr.h"                 /* Timer functions           */
#include        "hi_extr.h"                 /* History functions         */

/* Define external inner-component global data references.  */

extern INT              INC_Initialize_State;
extern INT              HID_History_Enable;
extern INT              HID_Write_Index;
extern INT              HID_Read_Index;
extern INT              HID_Entry_Count;
extern TC_PROTECT       HID_History_Protect;


/* Define the actual history table.  Note that this is defined in this file
   in order to eliminate this table if none of the run-time history functions
   are accessed.  */

HI_HISTORY_ENTRY  HIC_History_Table[HI_MAX_ENTRIES];


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      HIC_Disable_History_Saving                                       */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function disables the history saving function.              */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      TCT_Protect                         Protect history structures   */
/*      TCT_Unprotect                       Release history protection   */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*      03-01-1994      Replaced void with VOID,                         */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*                                                                       */
/*************************************************************************/
VOID  HIC_Disable_History_Saving(VOID)
{
NU_SUPERV_USER_VARIABLES

    /* Switch to supervisor mode */
    NU_SUPERVISOR_MODE();

    /* Protect the history data structures.  */
    TCT_Protect(&HID_History_Protect);

    /* Disable history saving by setting the enable flag to false.  */
    HID_History_Enable =  NU_FALSE;

    /* Release protection.  */
    TCT_Unprotect();

    /* Return to user mode */
    NU_USER_MODE();
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      HIC_Enable_History_Saving                                        */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function enables the history saving function.               */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      TCT_Protect                         Protect history structures   */
/*      TCT_Unprotect                       Release history protection   */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*      03-01-1994      Replaced void with VOID,                         */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*                                                                       */
/*************************************************************************/
VOID  HIC_Enable_History_Saving(VOID)
{
NU_SUPERV_USER_VARIABLES

    /* Switch to supervisor mode */
    NU_SUPERVISOR_MODE();

    /* Protect the history data structures.  */
    TCT_Protect(&HID_History_Protect);

    /* Enable history saving by setting the enable flag to true.  */
    HID_History_Enable =  NU_TRUE;

    /* Release protection.  */
    TCT_Unprotect();

    /* Return to user mode */
    NU_USER_MODE();
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      HIC_Make_History_Entry_Service                                   */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function makes an application entry in the history table.   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      HIC_Make_History_Entry              Make a history entry         */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      param1                              First history parameter      */
/*      param2                              Second history parameter     */
/*      param3                              Third history parameter      */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*                                                                       */
/*************************************************************************/
VOID  HIC_Make_History_Entry_Service(UNSIGNED param1,
                                        UNSIGNED param2, UNSIGNED param3)
{
    /* Call actual function to make the history entry.  */
    HIC_Make_History_Entry(NU_USER_ID, param1, param2, param3);
}



/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      HIC_Make_History_Entry                                           */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function makes an entry in the next available location in   */
/*      the history table- if history saving is enabled.                 */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */